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/* --------------------------------------------------------------------------*/
/* */
/* read the ambient light sensor on Apple Mac OS X */
/* Written by Hans-Christoph Steiner <hans@at.or.at> */
/* */
/* Copyright (c) 2008 Free Software Foundation */
/* */
/* This program is free software; you can redistribute it and/or */
/* modify it under the terms of the GNU General Public License */
/* as published by the Free Software Foundation; either version 2 */
/* of the License, or (at your option) any later version. */
/* */
/* See file LICENSE for further informations on licensing terms. */
/* */
/* This program is distributed in the hope that it will be useful, */
/* but WITHOUT ANY WARRANTY; without even the implied warranty of */
/* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the */
/* GNU General Public License for more details. */
/* */
/* You should have received a copy of the GNU General Public License */
/* along with this program; if not, write to the Free Software Foundation, */
/* Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301, USA */
/* */
/* --------------------------------------------------------------------------*/
#include <mach/mach.h>
#include <IOKit/IOKitLib.h>
#include <CoreFoundation/CoreFoundation.h>
#include <m_pd.h>
#define DEBUG(x)
//#define DEBUG(x) x
/*------------------------------------------------------------------------------
* CLASS DEF
*/
static t_class *ambient_light_sensor_class;
typedef struct _ambient_light_sensor {
t_object x_obj;
t_symbol* sensor_name;
io_service_t io_service;
io_connect_t io_connect;
t_outlet* data_outlet;
t_outlet* status_outlet;
} t_ambient_light_sensor;
enum {
kGetSensorReadingID = 0, // getSensorReading(int *, int *)
kGetLEDBrightnessID = 1, // getLEDBrightness(int, int *)
kSetLEDBrightnessID = 2, // setLEDBrightness(int, int, int *)
kSetLEDFadeID = 3, // setLEDFade(int, int, int, int *)
// other firmware-related functions
verifyFirmwareID = 4, // verifyFirmware(int *)
getFirmwareVersionID = 5,// getFirmwareVersion(int *)
// other flashing-related functions
// ...
};
/*------------------------------------------------------------------------------
* IMPLEMENTATION
*/
static void ambient_light_sensor_output(t_ambient_light_sensor* x)
{
DEBUG(post("ambient_light_sensor_output"););
kern_return_t kernResult;
IOItemCount scalarInputCount = 0;
IOItemCount scalarOutputCount = 2;
SInt32 left = 0, right = 0;
t_atom output_atoms[2];
if(x->io_connect)
{
kernResult = IOConnectMethodScalarIScalarO(x->io_connect,
kGetSensorReadingID,
scalarInputCount,
scalarOutputCount,
&left,
&right);
if( kernResult == KERN_SUCCESS)
{
SETFLOAT(output_atoms, left);
SETFLOAT(output_atoms + 1, right);
outlet_list(x->data_outlet, &s_list, 2, output_atoms);
}
else if(kernResult == kIOReturnBusy)
pd_error(x,"[ambient_light_sensor]: device busy");
else
pd_error(x,"[ambient_light_sensor]: could not read device");
}
}
static void ambient_light_sensor_info(t_ambient_light_sensor* x)
{
t_atom output_atom;
SETSYMBOL(&output_atom, x->sensor_name);
outlet_anything(x->status_outlet, gensym("sensor"), 1, &output_atom);
}
static void ambient_light_sensor_free(t_ambient_light_sensor* x)
{
IOServiceClose(x->io_connect);
}
static void *ambient_light_sensor_new(void)
{
DEBUG(post("ambient_light_sensor_new"););
t_ambient_light_sensor *x = (t_ambient_light_sensor *)pd_new(ambient_light_sensor_class);
kern_return_t kernResult;
x->io_service = IOServiceGetMatchingService(kIOMasterPortDefault,
IOServiceMatching("AppleLMUController"));
if(x->io_service)
{
post("[ambient_light_sensor]: found AppleLMUController");
x->sensor_name = gensym("AppleLMUController");
}
else
{
error("[ambient_light_sensor]: AppleLMUController not found, trying IOI2CDeviceLMU");
x->io_service = IOServiceGetMatchingService(kIOMasterPortDefault,
IOServiceMatching("IOI2CDeviceLMU"));
if(x->io_service)
{
x->sensor_name = gensym("IOI2CDeviceLMU");
post("[ambient_light_sensor]: found IOI2CDeviceLMU");
}
else
pd_error(x,"[ambient_light_sensor]: no sensor found");
}
kernResult = IOServiceOpen(x->io_service, mach_task_self(), 0, &x->io_connect);
IOObjectRelease(x->io_service);
if (kernResult != KERN_SUCCESS)
{
error("[ambient_light_sensor]: IOServiceOpen(): %d", kernResult);
}
x->data_outlet = outlet_new(&x->x_obj, &s_list);
x->status_outlet = outlet_new(&x->x_obj, &s_anything);
return (x);
}
void ambient_light_sensor_setup(void)
{
ambient_light_sensor_class = class_new(gensym("ambient_light_sensor"),
(t_newmethod)ambient_light_sensor_new,
(t_method)ambient_light_sensor_free,
sizeof(t_ambient_light_sensor),
CLASS_DEFAULT,
0);
/* add inlet datatype methods */
class_addbang(ambient_light_sensor_class,(t_method) ambient_light_sensor_output);
class_addmethod(ambient_light_sensor_class,(t_method) ambient_light_sensor_info,
gensym("info"), 0);
}
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